Related Experiment Video
Updated: Jan 21, 2026

Evanescent Field Based Photoacoustics: Optical Property Evaluation at Surfaces
Published on: July 26, 2016
Influence of Size on Optical and Electrical Properties of GaN-Based Membrane μ-LED
Gangyi Zhu1, Jiaping Li1, Guoqing Qiu1
1Peter Grünberg Research Centre, Nanjing University of Posts and Telecommunications, Nanjing 210003, China.
Abstract:
The electrical and optical properties of micro-light emitting diodes (μ-LEDs), including current-voltage (I-V), capacitance-voltage (C-V) curves, photoluminescence (PL) as well as electroluminescence (EL) spectra have been measured and analyzed. It is found that the unit area emitting intensity of small size μ-LED is stronger that of big size μ-LED at the same conditions, due to the enhancement of both the internal quantum efficiency ηint and extraction efficiency Cex. The present method of utilizing the μ-LED for improving the unit area brightness of LEDs is applicable to high efficiency surface emitting device on GaN-on-silicon platform.
Related Concept Videos
Sources and Properties of Electric Charge
Most atoms additionally constitute another fundamental particle, the neutron. It carries no electrical charge. A...
Properties of Electric Field Lines
For one, the electric field of a positive charge must originate from it. That is because its electric field points away from it. Moreover, since the magnitude of the field asymptotes to zero at infinity, the...
Properties of Enantiomers and Optical Activity
Properties of Transition Metals
Physical and Chemical Properties of Matter
Cell Size
Surface Area
Cells can take in nutrients and water via diffusion through the plasma membrane itself or through specific channels in the membrane. The area of the membrane surrounding...

